Conwy Castle dominates the mouth of the River Conwy and the medieval walled town of Conwy in North Wales like a huge goliath and serves as the major tourist attraction in the county of Conwy. The castle was built on the orders of King Edward I of England and construction began in 1283 under the direction of Edward's chief architect James of St. George.
Conwy’s medieval walls are some of the best preserved in the world and its 13th-century castle is a show stopper – standing proud above the town, its magnificent towers are a potent reminder of Wales’ turbulent past.
Conwy Castle is a fortification in Conwy, located in North Wales. It was built by Edward I, during his conquest of Wales, between 1283 and 1289. Constructed as part of a wider project to create the walled town of Conwy, the combined defences cost around £15,000, a huge sum for the period. Over the next few centuries, the castle played an important part in several wars. It withstood the siege of Madog ap Llywelyn in the winter of 1294–95, acted as a temporary haven for Richard II in 1399 and was held for several months by forces loyal to Owain Glyndŵr in 1401.
source via Wikipedia: https://en.wikipedia.org/wiki/Conwy_Castle